Fix the labelSelector capitalization issue and set memberSelector to one of three options

Signed-off-by: JesseStutler <[email protected]>

Author: JesseStutler

pkg/apis/topology/v1alpha1/hypernode_types.go

@@ -95,8 +95,8 @@ type MemberSpec struct {
 //		   regexMatch:
 //		     pattern: "^node-[0-9]+$"
 //
-// +kubebuilder:validation:XValidation:rule="has(self.exactMatch) || has(self.regexMatch) || has(self.LabelMatch)",message="Either ExactMatch or RegexMatch or LabelMatch must be specified"
-// +kubebuilder:validation:XValidation:rule="!(has(self.exactMatch) && has(self.regexMatch) && has(self.LabelMatch))",message="ExactMatch and RegexMatch and LabelMatch cannot be specified together"
+// +kubebuilder:validation:XValidation:rule="has(self.exactMatch) || has(self.regexMatch) || has(self.labelMatch)",message="Either ExactMatch or RegexMatch or LabelMatch must be specified"
+// +kubebuilder:validation:XValidation:rule="(has(self.exactMatch) ? 1 : 0) + (has(self.regexMatch) ? 1 : 0) + (has(self.labelMatch) ? 1 : 0) <= 1",message="Only one of ExactMatch, RegexMatch, or LabelMatch can be specified"
 type MemberSelector struct {
 	// ExactMatch defines the exact match criteria.
 	// +optional